content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2012, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates.
   * Other names may be trademarks of their respective owners.]
   *
   * ----------------------
   * DefaultPolarPlotEditor.java
   * ----------------------
   * (C) Copyright 2005-2011, by Object Refinery Limited and Contributors.
   *
   * Original Author:  Martin Hoeller;
   * Contributor(s):   -;
   *
   * Changes
   * -------
   * 03-Nov-2011 : Version 1 (MH);
   *
   */
  
  
  package org.jfree.chart.editor;
  
  import java.awt.event.ActionEvent;
  import java.awt.event.FocusEvent;
  import java.awt.event.FocusListener;
  
  import javax.swing.BorderFactory;
  import javax.swing.JLabel;
  import javax.swing.JPanel;
  import javax.swing.JTabbedPane;
  import javax.swing.JTextField;
  
  import org.jfree.chart.axis.NumberTickUnit;
  import org.jfree.chart.plot.Plot;
  import org.jfree.chart.plot.PolarPlot;
  import org.jfree.chart.ui.LCBLayout;
  
  /**
   * A panel for editing the properties of a {@link PolarPlot}.
   */
  public class DefaultPolarPlotEditor extends DefaultPlotEditor
      implements FocusListener {
  
      /** A text field to enter a manual TickUnit. */
      private JTextField manualTickUnit;
  
      /** A text field to enter the angleOffset. */
      private JTextField angleOffset;
  
      /** The size for the manual TickUnit. */
      private double manualTickUnitValue;
  
      /** The value for the plot's angle offset. */
      private double angleOffsetValue;
  
  
      /**
       * Standard constructor - constructs a panel for editing the properties of
       * the specified plot.
       *
       * @param plot  the plot, which should be changed.
       */
      public DefaultPolarPlotEditor(PolarPlot plot) {
          super(plot);
          this.angleOffsetValue = plot.getAngleOffset();
          this.angleOffset.setText(Double.toString(this.angleOffsetValue));
          this.manualTickUnitValue = plot.getAngleTickUnit().getSize();
          this.manualTickUnit.setText(Double.toString(this.manualTickUnitValue));
      }
  
      @Override
      protected JTabbedPane createPlotTabs(Plot plot) {
          JTabbedPane tabs = super.createPlotTabs(plot);
          // TODO find a better localization key
          tabs.insertTab(localizationResources.getString("General1"), null, createPlotPanel(), null, 0);
          tabs.setSelectedIndex(0);
          return tabs;
      }
  
      private JPanel createPlotPanel() {
          JPanel plotPanel = new JPanel(new LCBLayout(3));
          plotPanel.setBorder(BorderFactory.createEmptyBorder(4, 4, 4, 4));
  
          plotPanel.add(new JLabel(localizationResources.getString(
                  "AngleOffset")));
          this.angleOffset = new JTextField(Double.toString(
                  this.angleOffsetValue));
          this.angleOffset.setActionCommand("AngleOffsetValue");
          this.angleOffset.addActionListener(this);
          this.angleOffset.addFocusListener(this);
          plotPanel.add(this.angleOffset);
          plotPanel.add(new JPanel());
  
          plotPanel.add(new JLabel(localizationResources.getString(
                  "Manual_TickUnit_value")));
          this.manualTickUnit = new JTextField(Double.toString(
                  this.manualTickUnitValue));
          this.manualTickUnit.setActionCommand("TickUnitValue");
          this.manualTickUnit.addActionListener(this);
          this.manualTickUnit.addFocusListener(this);
          plotPanel.add(this.manualTickUnit);
          plotPanel.add(new JPanel());
  
          return plotPanel;
      }
  
      /**
       * Does nothing.
       *
       * @param event  the event.
       */
      @Override
      public void focusGained(FocusEvent event) {
          // don't need to do anything
      }
  
      /**
       *  Revalidates minimum/maximum range.
       *
       *  @param event  the event.
       */
      @Override
      public void focusLost(FocusEvent event) {
          if (event.getSource() == this.angleOffset) {
              validateAngleOffset();
          }
          else if (event.getSource() == this.manualTickUnit) {
              validateTickUnit();
          }
      }
  
      /**
       * Handles actions from within the property panel.
       * @param event an event.
       */
      @Override
      public void actionPerformed(ActionEvent event) {
          String command = event.getActionCommand();
          if (command.equals("AngleOffsetValue")) {
              validateAngleOffset();
          }
          else if (command.equals("TickUnitValue")) {
              validateTickUnit();
          }
      }
  
      public void validateAngleOffset() {
          double newOffset;
          try {
              newOffset = Double.parseDouble(this.angleOffset.getText());
          }
          catch (NumberFormatException e) {
              newOffset = this.angleOffsetValue;
          }
          this.angleOffsetValue = newOffset;
          this.angleOffset.setText(Double.toString(this.angleOffsetValue));
      }
  
      public void validateTickUnit() {
          double newTickUnit;
          try {
              newTickUnit = Double.parseDouble(this.manualTickUnit.getText());
          }
          catch (NumberFormatException e) {
              newTickUnit = this.manualTickUnitValue;
          }
  
          if (newTickUnit > 0.0 && newTickUnit < 360.0) {
              this.manualTickUnitValue = newTickUnit;
          }
          this.manualTickUnit.setText(Double.toString(this.manualTickUnitValue));
      }
  
      @Override
      public void updatePlotProperties(Plot plot) {
          super.updatePlotProperties(plot);
          PolarPlot pp = (PolarPlot) plot;
          pp.setAngleTickUnit(new NumberTickUnit(this.manualTickUnitValue));
          pp.setAngleOffset(this.angleOffsetValue);
      }
  }
  